Best time to visit Icheon
The best time to visit Icheon is April–May and October, judged on twenty years of weather records and the events worth going for.
Icheon, Gyeonggi-do, South Korea
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 2.5 °C / 37 °F | -6.6 °C / 20 °F | 20 mm / 0.8 in | neither best nor good |
| February | 5.5 °C / 42 °F | -4.1 °C / 25 °F | 28 mm / 1.1 in | neither best nor good |
| March | 11.8 °C / 53 °F | 0.8 °C / 33 °F | 52 mm / 2 in | neither best nor good |
| April | 18.2 °C / 65 °F | 6.1 °C / 43 °F | 79 mm / 3.1 in | best month |
| May | 23.8 °C / 75 °F | 12 °C / 54 °F | 99 mm / 3.9 in | best month |
| June | 27.8 °C / 82 °F | 17.8 °C / 64 °F | 118 mm / 4.7 in | good month |
| July | 29.1 °C / 84 °F | 22.2 °C / 72 °F | 318 mm / 12.5 in | neither best nor good |
| August | 29.9 °C / 86 °F | 22.5 °C / 73 °F | 230 mm / 9 in | neither best nor good |
| September | 25.9 °C / 79 °F | 16.7 °C / 62 °F | 140 mm / 5.5 in | good month |
| October | 20.1 °C / 68 °F | 9.1 °C / 48 °F | 63 mm / 2.5 in | best month |
| November | 12.2 °C / 54 °F | 2.1 °C / 36 °F | 49 mm / 1.9 in | good month |
| December | 3.9 °C / 39 °F | -4.8 °C / 23 °F | 26 mm / 1 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: best
- MMay: best
- JJune: good
- JJuly: neither
- AAugust: neither
- SSeptember: good
- OOctober: best
- NNovember: good
- DDecember: neither
- Best
- April–May, October
- Good
- June, September, November
Why these months
April · best
In its favour: feels like (high) 15.9 °C / 61 °F, average daily high 18.2 °C / 65 °F, share of daylight that is sunny 74%, precipitation 79 mm / 3.1 in, wet days 7.9 days, days with heavy rain 2.6 days, relative humidity 60%, average daily low 6.1 °C / 43 °F.
May · best
In its favour: feels like (high) 23.2 °C / 74 °F, average daily high 23.8 °C / 75 °F, share of daylight that is sunny 71%, precipitation 99 mm / 3.9 in, wet days 7.8 days, average daily low 12 °C / 54 °F, relative humidity 63%, days with heavy rain 3.4 days.
June · good
In its favour: share of daylight that is sunny 69%, feels like (high) 29.4 °C / 85 °F, average daily high 27.8 °C / 82 °F, wet days 8.5 days, precipitation 118 mm / 4.7 in, days with heavy rain 3.1 days, average daily low 17.8 °C / 64 °F, relative humidity 68%.
September · good
In its favour: feels like (high) 27.5 °C / 82 °F, average daily high 25.9 °C / 79 °F, share of daylight that is sunny 67%, wet days 8.8 days, average daily low 16.7 °C / 62 °F, days with heavy rain 4 days, relative humidity 75%.
Against: precipitation 140 mm / 5.5 in.
October · best
In its favour: feels like (high) 19 °C / 66 °F, average daily high 20.1 °C / 68 °F, share of daylight that is sunny 77%, precipitation 63 mm / 2.5 in, wet days 6.3 days, days with heavy rain 1.8 days, average daily low 9.1 °C / 48 °F, relative humidity 72%.
November · good
In its favour: precipitation 49 mm / 1.9 in, share of daylight that is sunny 76%, days with heavy rain 1.1 days, wet days 6.7 days, relative humidity 68%.
Against: feels like (high) 9.3 °C / 49 °F, average daily high 12.2 °C / 54 °F, average daily low 2.1 °C / 36 °F.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: neither
- MMarch: best
- AApril: best
- MMay: best
- JJune: neither
- JJuly: neither
- AAugust: neither
- SSeptember: neither
- OOctober: best
- NNovember: best
- DDecember: neither
- Best
- March–May, October–November
Why these months
March · best
In its favour: average daily high 11.8 °C / 53 °F, precipitation 52 mm / 2 in, wet days 7 days, days with heavy rain 1.6 days, share of daylight that is sunny 77%, daylight per day 12 h, feels like (high) 8.5 °C / 47 °F, average daily low 0.8 °C / 33 °F, wind (daily max) 16 km/h / 10 mph.
April · best
In its favour: average daily high 18.2 °C / 65 °F, precipitation 79 mm / 3.1 in, wet days 7.9 days, feels like (high) 15.9 °C / 61 °F, average daily low 6.1 °C / 43 °F, share of daylight that is sunny 74%, daylight per day 13.2 h, days with heavy rain 2.6 days, wind (daily max) 16 km/h / 10 mph.
May · best
In its favour: average daily high 23.8 °C / 75 °F, precipitation 99 mm / 3.9 in, wet days 7.8 days, average daily low 12 °C / 54 °F, share of daylight that is sunny 71%, daylight per day 14.2 h, feels like (high) 23.2 °C / 74 °F, days with heavy rain 3.4 days, wind (daily max) 15 km/h / 9 mph.
October · best
In its favour: average daily high 20.1 °C / 68 °F, precipitation 63 mm / 2.5 in, wet days 6.3 days, days with heavy rain 1.8 days, feels like (high) 19 °C / 66 °F, average daily low 9.1 °C / 48 °F, share of daylight that is sunny 77%, daylight per day 11.2 h, wind (daily max) 12 km/h / 7 mph.
November · best
In its favour: average daily high 12.2 °C / 54 °F, precipitation 49 mm / 1.9 in, wet days 6.7 days, days with heavy rain 1.1 days, share of daylight that is sunny 76%, feels like (high) 9.3 °C / 49 °F, average daily low 2.1 °C / 36 °F, wind (daily max) 13 km/h / 8 mph, daylight per day 10.2 h.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is 곤지암스키장, Konjiam Resort, 14 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | -2.1 °C | 1.3 °C | 8.5 °C | 15.9 °C | 23.2 °C | 29.4 °C | 33 °C | 34.2 °C | 27.5 °C | 19 °C | 9.3 °C | -0.2 °C |
| Days with heavy rain | 0.2 days | 0.8 days | 1.6 days | 2.6 days | 3.4 days | 3.1 days | 8.4 days | 6.4 days | 4 days | 1.8 days | 1.1 days | 0.6 days |
| Time rain usually falls | 8 am | 12 pm | 12 am | 2 pm | 5 am | 1 am | 3 pm | 9 am | 7 am | 2 pm | 6 am | 3 pm |
| Sunshine per day | 7.9 h | 8.6 h | 9.3 h | 9.7 h | 10 h | 10.1 h | 7.6 h | 8.5 h | 8.3 h | 8.6 h | 7.8 h | 7.6 h |
| Relative humidity | 61% | 60% | 60% | 60% | 63% | 68% | 80% | 79% | 75% | 72% | 68% | 64% |
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 27.3 µg/m³ | 24.5 µg/m³ | 29.4 µg/m³ | 27.7 µg/m³ | 26.6 µg/m³ | 27 µg/m³ | 20.7 µg/m³ | 23.5 µg/m³ | 18 µg/m³ | 17.9 µg/m³ | 21 µg/m³ | 22.7 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 43.4 µg/m³ | 38.4 µg/m³ | 44 µg/m³ | 41.8 µg/m³ | 41.5 µg/m³ | 43.3 µg/m³ | 36.9 µg/m³ | 40.6 µg/m³ | 30.9 µg/m³ | 28.4 µg/m³ | 33.4 µg/m³ | 36.5 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.